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Any official exchange between the United States and Taiwan under any excuse is a violation to the one-China principle and the three joint communiques between China and the United States, and an intervention in China's internal affairs, Geng said.

Another challenge of developing such vehicles in the near future is to make more companies and groups understand the value of methanol vehicles so that the sector can be promoted nationwide, he added.

Another such line in Chengdu, capital of Sichuan province, is also in the planning process, said Zhai.

Apart from the AIIB, other multilateral financial institutions have also offered support to China amid the coronavirus outbreak in their own ways.

Another region that would be hit is the MaerkischerKreis region in western Germany, where there are many export-oriented small and medium-sized firms.